Peters



v Model.)

E. HERZIG;

- SCREW DRIVER. No, 261,925.- PatentedAug.1, 1882.

WITNESSES:

ATTORNEY V UNITED STATES PATENT OFFICE;

EDUARD HERZIG, OF JERSEY CITY, NEW JERSEY.

SCREW-DRIVER.

SPECIFICATION forming'ipart of Letters Patent No. 261,925, dated August 1, 1882.

' Application filed May 22, 1882. (No model.)

To all whom it may concern: I

Be it known that I, E UARD HERZlG, of Jersey City, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Screw-Drivers, of which the following is a specification.

This invention hasreference to an improved implement for quickly and reliably driving in screws, to be used in cases in which large numbers of screws have to be driven, as in machines for winding, twisting, and spinning silk and other fibers; and the invention consists of a tubular handle which is provided at the lower end with a fixed stirrup that retains the nut through which the spirally-twisted spindle passes. The nut is provided with aprojectingstop that engages a ratchet at the lower end of the handle. A spring-stop of the handle serves to retain the not so as to prevent its engagement with the ratchet when the device is to be used for unscrewing screws. An axiallyturning collar and a fixed clamp-socket are applied to the outer end of the screw-spindle for applying an interchangeable bit thereto, while the opposite end of the spindle has an interior bearing-sleeve, whereby the contact of the spindle with the tubular-handle is prevented.

"In the accompanying drawings, Figure 1 represents a side elevation, partly in section, of my improved screw-driving implement; and Figs. 2, 3, and 4: are respectively horizontal sections of the same on lines :v m, y y, and 22, Fig. 1.

Similar letters of reference indicate the corresponding parts.

A in the drawings represents the tubular handle of my improved screw-driver, which is preferablymade of a tube, a, a wooden handle portion, b, at the upper end, and of a corresponding wooden portion, d, at the lower end. To the lower portion, (1, is applied a fixed stirrnp, B, the ring shaped end plate, 6, of which is supported by two fixed rods, 0, that are attaohed at diametrically-opposite points to the lower handle portion, 01. The stirrup B serves to retain the nut 0, whereby aspira-lly-twisted screw-spindle, D, arranged inside of the tubular handle A, is revolved when the handle, with the nut G, is moved forward toward the point where the screw is to be driven in. The nut G is provided with a projecting stop,f, at

its circumference, which engages the teeth of aratchet, f, formed at the lower end of the bandle portion d. The nut O has suffic-ient play in the stirrup B, sothat itsstopf can clear the teeth of the ratchetf and turn freely with the screw-spindle 1) during the backward motion ofthe handle when the bit is applied to the nickof the screw to be inserted and screwed in. The lower handle portiomd, is provided above the upper end of the nutO with a small guide-socket, 9, that serves to guide a springpressed stop, 9, the shank of which has an exterior head, 9 By pressing upon the head 9 and throwing the stop 9 inward over the upper end of the nut O the same is retained and its stop f prevented from engaging the ratchet f of the lower handle portion. The result is that the spindle is revolved around its axis in opposite direction by the return of the handle, and thereby the implement also adapted to withdraw screws quickly and conveniently. The lower exterior end of the screw-spindleD is provided with a socket, D, and a clampscrew for inserting therein bits of diflerent sizes, and with a loosely-turning collar, D, that is secured by two, semicircular washers, h, to a groove or throat, h, of' the end socket, D, of the screw-spindle, as shown clearly in Figs. 1 and 4. The upper end of the screwspindle D, which moves in the tubular handle A, is made of cylindrical shape and applied by means of the collar to a sleeve, z',of slightly larger diameter than the spindle D. The sleeve i has an interior stop-sleeve, 2', below the collar of the spindle end, so as to be retained thereon, and serves as abearing for the screwspindle in the tubular handle, so thatthe spindle itself is not brought in con tact with the interior surface of the handle. By this arrangement the motionof the spindle in the handle is facilitated and rendered smooth and easy.

The screw-driving device is operated as follows: The bit is applied to the nick of the screw, which is held in position with the thumb and forefinger, while the remaining fingers and ball of the hand take hold of the loose collar D The handle is, now drawn back away from the collar, whereby as the spindle is retained by the screw the nut G is compelled to follow the spindle and rotate in the stirrup until the handle arrives at the uppermost end of the spindle and is stopped by the interior sleeve-bearing of the same. By the forward motion of the handle the ratchet at the end of the handle engages the stop of the nut, so as to retain the latter in position and compel the screw-spindle to rotate, whereby the screw is quickly screwed in atthe desired point simply by the quick forward motion of the handle. A screw maybe withdrawn by the backward motion of the handle, if the spring-stop is forced in over the nut, so. as to stop the same. In this manner a large number of screws can be screwed in or withdrawn at a considerable saving" of time and labor, as the turning action is greatly facilitated and expedited by the use of thisimplement. Having thusdescribed myinventioml claim as new and desire to secure by Letters Patent- 1. In a screw-drh 'ing implement,the combination of the tubular handle A, having a stirru'p, B, with a nut, O, retained by said stirrup, and with a screw-spindle, D, passing through said nut and revolving therein, the nut being arranged with a projecting stop, f, that engages a ratchet, f, at the lower end of the handle, substantially as set forth.

2. In a screw-driving implement, the combination, with the tubular handle A, having a stirrup, B, at the lower end of a nut,G, that is adapted to engage by a stop, f, the teeth of a ratchet, f, at the lower end of the handle, of a spiral screw-spindle, D, said spindle being guided at the upper end by a sleeve-bearing in the tubular handle, and provided at the lower end with a bit-socket and movable collar, substantially as set forth.

In testimony that I claim the foregoing as my invention have signed my name in presence of two subscribing witnesses.

EDUARD HEBZIG. Witnesses:

JOHN CATIN, J ACOB LUTHER. 

